Device for re-dressing surfaces of pulp-grindstones.



ging between the teeth, which would render the bun unfit to accomplish the desired. result, obviated.

The bui' is also provided with :i central 5 bearing ,it in order that the saine may be l suitably mounted on a rotating shaft.

What I claim to be new is Abui foi.' use in rca-dressing the surface of pulp grinding stones, provided with teeth 10 upon its surface, separated by channels the .signaturein presence of two witnesses.

WILLIAM l). AIKLN.'

Witnesses.

F. H. CLARK, A. H. RECTOR. 

